BlackRock’s purpose is to help more and more people experience financial well-being. As a fiduciary to investors and a leading provider of financial technology, our clients turn to us for the solutions they need when planning for their most important goals. As of June 30, 2019, the firm managed approximately $6.84 trillion in assets on behalf of investors worldwide.

The legal name of this fund is the iShares® iBonds® Dec 2021 Term Muni Bond ETF.

INVESTMENT OBJECTIVE

The iShares® iBonds® Dec 2021 Term Muni Bond ETF seeks to track the investment results of an index composed of investment-grade U.S. municipal bonds maturing after December 31, 2020 and before December 2, 2021.

The performance quoted represents past performance and does not guarantee future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when sold or redeemed, may be worth more or less than the original cost. Current performance may be lower or higher than the performance quoted.

The Hypothetical Growth of $10,000 chart reflects a hypothetical $10,000 investment and assumes reinvestment of dividends and capital gains. Fund expenses, including management fees and other expenses were deducted.

The performance quoted represents past performance and does not guarantee future results. Investment return and principal value of an investment will fluctuate so that an investor’s shares, when sold or redeemed, may be worth more or less than the original cost. Current performance may be lower or higher than the performance quoted, and numbers may reflect small variances due to rounding. Standardized performance and performance data current to the most recent month end may be found in the Performance section.

Exposure Breakdowns

Exposure Breakdowns

Geographic exposure relates principally to the domicile of the issuers of the securities held in the product, added together and then expressed as a percentage of the product’s total holdings. However, in some instances it can reflect the location where the issuer of the securities carries out much of their business. Bonds are included in US bond indices when the securities are denominated in U.S. dollars regardless of the domicile of the issuer.

The maturity breakdown above is based on Weighted Average Life (WAL). WAL is the average length of time to the repayment of principal for the securities in the fund. This metric considers the likelihood that bonds will be called or prepaid before the scheduled maturity date.

Credit quality ratings on underlying securities of the fund are received from S&P, Moody’s and Fitch and converted to the equivalent S&P major rating category. This breakdown is provided by BlackRock and takes the median rating of the three agencies when all three agencies rate a security the lower of the two ratings if only two agencies rate a security and one rating if that is all that is provided. Unrated securities do not necessarily indicate low quality. Below investment-grade is represented by a rating of BB and below. Ratings and portfolio credit quality may change over time.

Allocations are subject to change.

Estimated Net Acquisition Yield Calculator

Estimated Net Acquisition Yield Calculator

Calculate the Estimated Net Acquisition Yield (ENA Yield) based on the projected market purchase price that you input. This estimate also reflects the deduction of the expense ratio (18 basis points).

The NAV (as of Sep 13, 2019) used in the calculation is $25.73. The value you enter should correspond to your estimated market purchase price as of Sep 13, 2019.

Please note that the results generated by the Estimated Net Acquisition Yield Calculator are for illustrative purposes only and are not representative of any specific investment outcome.

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Literature

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How to Buy iShares ETFs

How to Buy iShares ETFs

There are many ways to access iShares ETFs. Learn how you can add them to your portfolio.

Carefully consider the Funds' investment objectives, risk factors, and charges and expenses before investing. This and other information can be found in the Funds' prospectuses or, if available, the summary prospectuses, which may be obtained by visiting the iShares ETF and BlackRock Fund prospectus pages. Read the prospectus carefully before investing. Investing involves risk, including possible loss of principal.

Before engaging Fidelity or any broker-dealer, you should evaluate the overall fees and charges of the firm as well as the services provided. Free commission offer applies to online purchases of select iShares ETFs in a Fidelity account. The sale of ETFs is subject to an activity assessment fee (from $0.01 to $0.03 per $1,000 of principal). For iShares ETFs, Fidelity receives compensation from the ETF sponsor and/or its affiliates in connection with an exclusive long-term marketing program that includes promotion of iShares ETFs and inclusion of iShares funds in certain Fidelity Brokerage Services platforms and investment programs. Please note, this security will not be marginable for 30 days from the settlement date, at which time it will automatically become eligible for margin collateral. Additional information about the sources, amounts, and terms of compensation can be found in the ETF’s prospectus and related documents. Fidelity may add or waive commissions on ETFs without prior notice.

The Funds are distributed by BlackRock Investments, LLC (together with its affiliates, “BlackRock”).

Important Information

Carefully consider the Funds' investment objectives, risk factors, and charges and expenses before investing. This and other information can be found in the Funds' prospectuses or, if available, the summary prospectuses which may be obtained by visiting the iShares Fund and BlackRock Fund prospectus pages. Read the prospectus carefully before investing.

Investing involves risk, including possible loss of principal.

Fixed income risks include interest-rate and credit risk. Typically, when interest rates rise, there is a corresponding decline in bond values. Credit risk refers to the possibility that the bond issuer will not be able to make principal and interest payments.

There may be less information on the financial condition of municipal issuers than for public corporations. The market for municipal bonds may be less liquid than for taxable bonds. Some investors may be subject to federal or state income taxes or the Alternative Minimum Tax (AMT). Capital gains distributions, if any, are taxable.

Funds that concentrate investments in specific industries, sectors, markets or asset classes may underperform or be more volatile than other industries, sectors, markets or asset classes and than the general securities market.

The iShares® iBonds® Muni ETFs (“Funds”) will terminate in September or December of the year in the Fund’s name. An investment in the Fund(s) is not guaranteed, and an investor may experience losses, including near or at the termination date. In the final months of the Fund’s operation, as the bonds it holds mature, its portfolio will transition to cash and cash-like instruments. Following the Fund’s termination date, the Fund will distribute substantially all of its net assets, after deduction of any liabilities, to then-current investors without further notice and will no longer be listed or traded. The Funds do not seek to return any predetermined amount.

During the final months prior to the Fund’s planned termination date, its yield will generally tend to move toward prevailing tax-exempt money market rates, and may be lower than the yields of the bonds previously held by the Fund and lower than prevailing yields for bonds in the market. As the Fund approaches its termination date, its holdings of money market or similar funds may increase, causing the Fund to incur the fees and expenses of these funds. The rate of Fund distribution payments may adversely affect the tax characterization of an investor’s returns from an investment in the Fund relative to a direct investment in municipal bonds. If the amount an investor receives as liquidation proceeds upon the Fund’s termination is higher or lower than the investor’s cost basis, the investor may experience a gain or loss for tax purposes.

Performance shown reflects fee waivers and/or expense reimbursements by the investment advisor to the fund for some or all of the periods shown. Performance would have been lower without such waivers.

Shares of ETFs are bought and sold at market price (not NAV) and are not individually redeemed from the Fund. Brokerage commissions will reduce returns. Market returns are based upon the midpoint of the bid/ask spread at 4:00 p.m. Eastern time (when NAV is normally determined for most ETFs), and do not represent the returns you would receive if you traded shares at other times.

Index returns are for illustrative purposes only. Index performance returns do not reflect any management fees, transaction costs or expenses. Indexes are unmanaged and one cannot invest directly in an index. Past performance does not guarantee future results.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

Certain sectors and markets perform exceptionally well based on current market conditions and iShares Funds can benefit from that performance. Achieving such exceptional returns involves the risk of volatility and investors should not expect that such results will be repeated.

Distribution Yield and 12m Trailing Yield results may have period over period volatility due to factors including tax considerations such as treatment of passive foreign investment companies (PFICs), treatment of defaulted bonds or excise tax requirements; exceptional corporate actions; seasonality of dividends from underlying holdings; significant fluctuations in fund shares outstanding; or fund capital gain distributions.

The Funds are distributed by BlackRock Investments, LLC (together with its affiliates, “BlackRock”).

Although BlackRock shall obtain data from sources that BlackRock considers reliable, all data contained herein is provided “as is” and BlackRock makes no representation or warranty of any kind, either express or implied, with respect to such data, the timeliness thereof, the results to be obtained by the use thereof or any other matter. BlackRock expressly disclaims any and all implied warranties, including without limitation, warranties of originality, accuracy, completeness, timeliness, non-infringement, merchantability and fitness for a particular purpose.